To prevent further frustration in the coming days, the U.S. Office of Personnel Management is urging many agencies and employers to consider allowing their employees to telecommute to alleviate the traffic congestion and road disruptions.

But it’s not just cars and buses that will see altered traffic patterns and delays. Pedestrians may encounter screening areas and heavy foot traffic near the summit events.

To make matters worse, protesters have taken to the streets and sidewalks. And more demonstrations are expected throughout the week.